JavaScript Basics (Typical examples of the number of young rabbits and rabbits)

The thickness of a piece of paper is 0.0001 meters, fold the paper, fold how many times the thickness exceeds the height of Everest 8848 meters

var sum=0;var a=0.0001for (var i=0;i<100;i++) {a=a*2;sum=sum+1;if (a>=8848) {break;}} Alert (SUM)

　　

There are a pair of young rabbits, the young rabbit 1 months later grow into a rabbit, the rabbit 1 months later into a rabbit and give birth to a pair of young rabbits, asked 6 months after how many pairs of rabbits, rabbits, rabbits, Cheng logarithm of how many. Because of the number of rabbits for the next month, the rabbit was the number of young rabbits last month, and the rabbit was added to the rabbit for the rabbits last month, so two variables were defined to receive the number of rabbits and rabbits in the last month.

var a=1;var b=0;var C=0;var M=0;var n=0;for (var x=1;x<=6;x++) {n=c;c=b+c;m=b;b=a;a=m+n;} Alert (A + "," +b+ "," +c ")

　　

Badminton Racket 15 Yuan, the ball 3 yuan, the water 2 yuan. $200 each at least one, 200 dollars just spent, how much could

var sum=0;for (Var x=1;x<=13;x++) {for (Var y=1;y<=66;y++) {for (Var z=1;z<=100;z++) {var c=15*x+3*y+2*z;if (c== () {   // remember to use = =   = to represent assignment     sum++;}  //sum++  and sum=sum++ The   latter is the first assignment and then + +          }           }     }alert (sum);     //Because when defining a variable, x, Y, Z are equal to 1 so that each of at least one of these conditions is met

　

Rooster 2, hen 1, chicken half, each of at least one, 100 buy 100 chickens how many possibilities

var sum=0;for (Var x=1;x<50;x++) {for (Var y=1;y<100;y++) {for (Var z=1;z<200;z++) {var a=2*x+y+0.5*z;var b=x+y+z ; if ((a==100) && (b==100)) {Sum++}}}}alert (sum);

　　

Pooled 1,2,5 20 Yuan money how many possible

var sum=0;  for (Var x=1;x<=20;x++) {for (  var y=1;y<=10;y++) {for  (var z=1;z<=5;z++) {  var a=x+2*y+5*z;  if (a==20) {  sum++}}}}  alert (sum)   

　　

JavaScript Basics (Typical examples of the number of young rabbits and rabbits)